Combinatorial Geometry ====================== Sage includes classes for convex rational polyhedral cones and fans, Groebner fans, lattice and reflexive polytopes (with integral coordinates), and generic polytopes and polyhedra (with rational or numerical coordinates). .. toctree:: :maxdepth: 2 sage/geometry/toric_lattice sage/geometry/cone sage/geometry/fan sage/geometry/fan_morphism sage/geometry/point_collection sage/geometry/toric_plotter sage/rings/polynomial/groebner_fan sage/geometry/lattice_polytope sage/geometry/polyhedron/constructor sage/geometry/polyhedron/representation sage/geometry/polyhedron/library sage/geometry/polyhedron/plot sage/geometry/polyhedron/base sage/geometry/polyhedron/base_QQ sage/geometry/polyhedron/base_RDF sage/geometry/polyhedron/backend_cdd sage/geometry/polyhedron/backend_ppl sage/geometry/polyhedron/cdd_file_format sage/geometry/triangulation/point_configuration sage/geometry/triangulation/base sage/geometry/triangulation/element